Digital Commons Network^™

Probing The Disequilibrium Chemistry Of Two Late T-Dwarfs Using Planetary Intensity Code For Atmospheric Scattering, Crystal-Lynn Jacqueline Bartier

Theses and Dissertations

We have performed a detailed analysis of the atmospheric properties of two late-T type brown dwarfs, 2MASSI J0415195-093506 and 2MASS J05591914-140448. For each brown dwarfs, we combined the spectra of each brown dwarf from the ground at 1-2.5 µm, AKARI at 2.5-5 µm, and from the Spitzer Space Telescope at 5-15 µm. For this project, we are particularly interested in probing the extent of vertical mixing. For this analysis, we used the Planetary Intensity Code for Atmospheric Scattering (PICASO), which is a code that creates a radiative transfer model for a given set of atmospheric parameters. With PICASO we find …

The Relational Good Life: Entrepreneurship Education And Grounded Sumak Kawsay In Otavalo, Ecuador, Vanessa I. Lozano Hardman

Theses and Dissertations

Indigenous Kichwa communities in Ecuador’s Otavalo region have long participated in local and transnational markets, historically as mindalaes, specialized traders of the northern Andes. Yet in recent years, international development-oriented NGOs have framed entrepreneurship education as newly necessary for economic development. These approaches emphasize individualized narratives of vision, self-reliance, and growth, often characterizing Indigenous peoples as lacking entrepreneurial skills or the appropriate mindset. Drawing on ethnographic research with youth, mothers, and teachers at Saminay–El Legado, an agro- technical, intercultural bilingual secondary school (UECIB) in the parish of San José de Quichinche, this article examines how entrepreneurship education intersects with grounded …

Independent English Teaching In Brazil: A Case Study, Jade G. Gunca

Theses and Dissertations

This qualitative case study investigates the experiences and practices of successful independent English as a Foreign Language (EFL) teachers in Brazil who operate outside traditional schools and private language institutes. Rather than providing a broad descriptive profile, this study offers an in-depth examination of a small group of teachers. These educators frequently use social media platforms such as Instagram and Facebook to showcase communicative, personalized, and flexible instruction in response to growing learner demand. Although English is widely taught in Brazilian schools, persistent structural constraints often limit students’ development of communicative proficiency, prompting some learners to seek instruction from independent …

Domain-Specific Fine-Tuning Of Neural Machine Translation For Georgian Religious Texts, Jacob Brent Fisher

Theses and Dissertations

This thesis investigates whether domain-specific fine-tuning of a large multilingual neural machine translation model improves translation quality for English-to-Georgian religious text, a low-resource pair underserved by existing systems. Using the 1.3-billion-parameter NLLB-200 model as a baseline, two LoRA-adapted variants were trained: General-FT, on 91,143 parallel segments of contemporary religious discourse drawn from the General Conference talks and other publications of The Church of Jesus Christ of Latter-day Saints, and Scriptural-FT, on 33,229 segments from the scriptural canon of The Church. The three models were evaluated using automated metrics (BLEU, chrF, COMET) covering both domain-matched and cross-domain conditions, and on a …

Publication News

Journal of East Asian Libraries

No abstract provided.

Lists Of Selected Full-Text Databases By Subscription In East Asian Studies, Anlin Yang, Michiko Ito, Ellie Kim, Jian P. Lee

Journal of East Asian Libraries

No abstract provided.

From Collection To Documentary: An Eventful Journey Of Developing And Managing The Wan-Go H.C. Weng Film Collection, Jim Cheng

Journal of East Asian Libraries

Experience, challenge, lesson, reward, and inspiration of developing and managing a special collection: Wan-go Weng Film Collection in a major research library.

The Taichung Polyglot, Mårten S. Saarela

Journal of East Asian Libraries

No abstract provided.

A Masked-Perturbation Model For Destabilization Security Games In Feedback Systems, Gabriel Michael Perry

Theses and Dissertations

In this thesis, we present a mathematical formulation for increasing cyberphysical system security. This model allows a system administrator to use assumptions about exposed signals to derive defense strategies meant to mitigate the system's vulnerability to feedback perturbation attacks. We begin with a survey of game theory with the goal of building the concepts of resource and security games. We then introduce our model, which is a security game; targets in this game are exposed signals in the model map of the system, and resources are perturbed or introduced dynamical relationships between these signals. This formulation, called the masked-perturbation model, …

Theoretical Expressivity Of Self-Attention As A Model Of Binary Sequence-To-Sequence Functions And Other Explorations, Dustin Angerhofer

Theses and Dissertations

The self-attention mechanism lies at the heart of modern sequential modeling with deep neural networks, especially in the context of Large Language Models (LLMs). The basic role of self-attention is to capture pairwise interactions between tokens in a sequence. This allows token embeddings to be endowed with context-dependent information before further processing. Despite its widespread use, our theoretical understanding of self-attention is still nascent. In this work, we examine self-attention as a model of binary sequence-to-sequence (seq2seq) functions, which is the simplest non-trivial case to analyze. We find, using VC dimension and the Sauer-Shelah lemma, that in the limit of …

Principal Coaching Impact: Elementary Principals' Perspectives On Their Coaching Experience, Kyle L. Hoopes

Theses and Dissertations

School principals face increasing complexity as they navigate instructional leadership, organizational change, and the emotional demands of supporting staff and students. Traditional professional development--often episodic and compliance-driven--has proven insufficient for helping principals translate knowledge into practice. This qualitative phenomenological study examined how 20 elementary principals in a large intermountain district experienced a dual-coach, team-based leadership coaching model and how coaching influenced their leadership practices and well-being. Semi-structured interviews and iterative thematic analysis revealed that coaching shaped three core areas of leadership practice: gaining clarity and direction, prioritizing instructional and organizational goals, and strengthening collaboration within school leadership teams. Principals also …

Self-Concept Clarity And Relationship Satisfaction: The Mediating Role Of Approach And Avoidance Motives For Sacrifice Among Heterosexual Couples, Hannah F. Hatch

Theses and Dissertations

While individuals often engage in relational sacrifice to promote positive outcomes like connection (approach motives), they may also sacrifice for a partner to avoid negative outcomes like conflict (avoidance motives). These distinct motives for sacrifice have been repeatedly linked with divergent couple outcomes, yet little is known about the personal and relational factors which shape them. The current study addressed this gap using dyadic data from 289 mixed-gender couples to examine how self-concept clarity (SCC) predicted changes in relationship satisfaction via approach and avoidance motives for sacrifice. Participants represented diverse ethnic and sociodemographic backgrounds across all demographic regions of the …

The Lookahead Transformer, Justin P. Olcott

Theses and Dissertations

Large Language Models (LLMs) are transformer models that generate text autoregressively in two stages: prefill and decode. The prefill stage processes all input tokens in parallel and caches them into the KV cache. The decode stage uses the KV cache, processes a single token at a time, and is generally memory-bandwidth constrained. Each decode step generates a token probability distribution, samples from it, appends the token to the cache, and repeats. This left-to-right, one-at-a-time generation paradigm has proven effective for language modeling in many domains; however, it also has limitations such as token permanence, constant compute per token generation, constant …

Maternal Age And Income Moderate The Effects Of Infant Sleep Interventions On Maternal Sleep And Mood, Rachel Kerr, Afton Craig, Kara Mcrae Duraccio

FHSS Mentored Research Conference

Introduction: Demographic and social factors, including maternal age, number of children, and income, may influence the success of sleep training approaches for infants based on differences in supports available and varying levels of maternal self-efficacy/confidence. This study investigated whether maternal income, age, and number of children moderated the effect of three infant behavioral sleep interventions on maternal sleep and mental health.

Methods: Mothers of infants (ages 5-10 months) were randomly assigned to basic sleep hygiene control, graduated extinction, or responsive parenting interventions to help improve the sleep of their infant. Mothers completed the Pittsburgh Sleep Quality Index, PROMIS Sleep Disturbance …

Fhss Collaborations: Departmental Cohesion And Inter-Departmental Ties, Sydney P. Goodson, Alexandra Williams, Aaron Hunter, Salem Hansen

FHSS Mentored Research Conference

This project analyzes patterns of faculty collaboration within the College of Family, Home, and Social Sciences (FHSS) at BYU using social network analysis of co-authorship data. As part of this research, we compiled data from Google Scholar on the 216 publishing faculty members within FHSS and their co-authorship connections. The study evaluates both internal cohesion and inter-departmental collaboration. Key measures include clustering coefficients to assess within-department cohesion, and degree and strength to capture the breadth and volume of collaborations across departments. Findings indicate that departments such as Sociology, School of Family Life, and Geography exhibit relatively high internal cohesion, suggesting …

Improving Reclamation Seeding Success Through Seed Technologies, Surface Preparation, And Microbial Inoculants, Josh M. De Santiago Lazalde

Theses and Dissertations

Revegetation of reclaimed lands is often limited by poor seed placement, unfavorable surface conditions, and reduced biological activity, particularly on steep or physically degraded substrates where broadcast seeding is commonly used. Improving early seeding establishment under these conditions requires approaches that address both physical and biological barriers to seedling development. We evaluated the effectiveness of surface preparation, seed technologies, and microbial inoculants for improving plant establishment in field and greenhouse settings relevant to mineland reclamation. At the field scale (Chapter 1), we investigated the effects of chain harrowing and seed enhancement treatments on the establishment of grasses, forbs, and shrubs …

Detection Of The Presence And Growth Of E. Coli Bacteria In A Droplet-Based Microfluidic System Using Laser Induced Fluorescence, Oshira Peiris

Theses and Dissertations

Antimicrobial resistance is a biomedical event, wherein an infectious microbe becomes non-responsive to the dosage of a particular antibiotic due to previous overuse or overexposure. Currently, agar plate disc diffusion is used as the gold standard for detecting antimicrobial resistance. The possibility of miniaturizing and speeding up detection techniques for antimicrobial resistance is investigated in this thesis. Microfabrication techniques were used in developing two droplet microfluidic systems interfaced with laser induced fluorescence detection. Microfluidic devices were manufactured with different droplet generating geometries using poly-dimethyl siloxane, soft lithography and hydrophobic surface treatment. The microfluidic devices were tested for droplet quality using …

Answers “Go By Water”: Felt Knowledge As An Alternative Epistemology In Othello, Annalisa Gulbrandsen

Theses and Dissertations

William Shakespeare's Othello is fundamentally a play about epistemology--how does one know what he/she knows amidst the sea of words, evidence, and misdirection? Traditionally, the problem of knowledge in Othello has been treated as an intellectual problem of the mind. However, this thesis argues that the play purposefully draws attention to the limits of what the mind can know by way of the eye (what is seen) and ear (what is spoken or heard), instead offering an alternative epistemology that is felt through embodiment. When Desdemona's words no longer have the power to affect what Othello believes, Desdemona's answers to …

Model Unification: A Systematic Approach For The Cluster Expansion, Kolten Barfuss

Theses and Dissertations

A systematic approach for model unification of cluster expansion models is developed and demonstrated. The method builds on previous work with the Manifold Boundary Approximation Method (MBAM) to identify supremal models. The work is motivated by the exercise of unifying cluster expansion models – characterized by Π matrices – for two binary alloys that share one atomic species to form a model for the ternary alloy. The result is the Supremal Π Algorithm, a systematic unification algorithm that relies on an MBAM-informed understanding of models and on the singular value decomposition. The algorithm yields ΠΛ, a Π matrix for the …

Mild Thermal Treatment Of Lithium-Ion Batteries To Optimize Black Mass Production, Brooke Lillie

Theses and Dissertations

This thesis explains the design of equipment and the experimental procedure for thermal treatment of lithium-ion batteries for the purpose of low-cost materials recycling. Conditions used were between 150 ℃ and 425 ℃, involving different atmospheric conditions and treatment durations. The battery samples were processed through a sieve shaker device. Mass loss during the heat treatment, and separation of the battery through sieving was used to analyze the effect of the treatments on separability of black mass from the batteries. Additionally, internal battery temperature was measured and compared to real average furnace temperature to monitor thermal runaway. Testing showed minimal …

The Artificial Maintenance Of Relationship Satisfaction: Romantic Ai Companion Usage Sustains Emerging Adults' Human Romantic Relationship Satisfaction While Eroding Relationship Stability, Rebekah M. Hakala

Theses and Dissertations

As artificial intelligence becomes increasingly sophisticated, romantic AI companions--AI systems designed to simulate romantic, emotional, or sexual relationships--have emerged as a novel relational phenomenon. Nearly one in four emerging adults now engage with romantic AI companions, yet little is known about how this usage affects their romantic human relationships. Drawing on Social Exchange Theory and the Investment Model of Commitment, and employing structural equation modeling, this thesis uses data from 2,431 emerging adults in romantic relationships to examine whether romantic AI companion usage influences relationship satisfaction and relationship stability among emerging adults in the United States (ages 18-30), and whether …

Impacts Of Arbuscular Mycorrhizal Fungi And Novel Soil Amendments On Perennial Grass Establishment In Mineland Soils, Melissa M. Burrell

Theses and Dissertations

Establishing perennial vegetation on mine waste materials is one of the primary challenges in mine land reclamation. Waste rock and mine tailing substrates typically lack the physical structure, nutrient availability, and biological communities necessary to support plant establishment and long-term ecosystem recovery. As a result, revegetation efforts often experience poor seeding success and limited plant persistence despite intensive management efforts. These studies investigated two complementary strategies to improve perennial grass establishment in degraded mine substrates: restoring mycorrhizal associations and enhancing soil function through soil amendments. The first study examined the role of arbuscular mycorrhizal fungi (AMF) in facilitating plant establishment …

The 12-Week Silence: A Scrollytelling Investigation Into Early Pregnancy Loss And The Case For Continuous Progesterone Monitoring, Audrey Gold

FHSS Mentored Research Conference

Opens with the scale of the problem (up to 1M miscarriages annually, all in the most data-poor window of pregnancy), describes the methodology (2 original surveys, 4 clinical interviews, peer-reviewed literature), walks through what the piece does visually (the distribution curve, the blind-spot timeline, the 5-phase progesterone chart, the intervention pathway), and closes with the central argument — that the silence is a gap in technology, not an inevitability.

Some Closure On The Relation Between Cfg And Peg, Nathan J. Bulloch

Theses and Dissertations

We work toward a practical, unified language formalism for structurally recursive languages by expressing the mathematical theories underlying context-free grammars with lookahead (CFGLA) in the Rocq theorem prover and leveraging CFGLA semantics to analyze interactions between between recursion and negative lookahead. We give examples of grammars with left-recursive negation cycles for the parsing expression grammar (PEG) variant due to Medeiros et al. and for the translation from PEG to CFGLA due to Miyazaki and Minamide. To study the interaction between left recursion and negative lookahead in a PEG context, we introduce FPEG, a left-recursive extension of PEG with Fitting semantics.

More Than Treating Errors: Bridging The Gaps And Expanding The Agenda For Scholarship On Teacher Written Feedback For L2 Writers, Lynn Goldstein, Robert Kohls

Journal of Response to Writing

Teacher written feedback is a central area of L2 scholarship and writing teacher education yet considerable research has focused on written corrective feedback (WCF) with considerably less attention paid to discourse-level (DLF) teacher written feedback. Our article identifies the gaps in the current teacher written feedback scholarship, explains why these gaps are problematic, and provides detailed recommendations for an agenda that examines teacher DLF and students’ use of this feedback. Our goal is to encourage scholars to explore new avenues of research that better take into account what writing “is” and “does” as well as take into account the linguistically …

Examining Automated Writing Evaluation Error Coverage In Relation To Uptake And Retention, Mohaddeseh Mehrzad, Mohammad Rahimi, Stephanie Link

Journal of Response to Writing

Despite the current widespread use of Automated Writing Evaluation (AWE) feedback, many issues regarding its efficacy still remain unresolved. Recent studies mainly focus on correctly detected errors with a lack of attention on the comprehensiveness of error detection, or error coverage. Error coverage is interesting because little is known about the capacity of AWE systems to fully detect common second language (L2) errors. It is also important to investigate the potential effect of such capacity on student uptake and retention, which are important constructs in fostering L2 writing development. To this end, the present study compared teacher feedback and AWE …

Navigating Feedback In Collaborative Writing: The Impact Of Student Backgrounds And Expectations On Transitions To New Academic And Social Spaces, Lindsey Gruber, María Fernández–Agüero

Journal of Response to Writing

This article examines how international students navigate feedback from a supervisor while working on a group writing project in a diverse English medium of instruction (EMI) bachelor’s program at a public university in Denmark, where no formalized writing or language support resources are offered in the students’ first year of instruction. Data were collected in qualitative, semi-structured interviews with 11 students who were identified through a survey of a first-year bachelor of arts cohort. Results from the survey showed that despite using a supervision model of education, few students perceived changes in feedback compared to their secondary school experiences, and …

Editors' Introduction, Betsy Gilliland, Lucie Moussu

Journal of Response to Writing

No abstract provided.

Academic And Mental Health Outcomes In Homeschoolers, Emily Higham

Family Perspectives

Homeschooling—education conducted outside traditional school settings and typically led by parents—has grown substantially in the United States, particularly following the COVID-19 pandemic. As participation has increased, greater attention has been directed toward understanding its implications for children’s development. This literature review examines associations between homeschooling, mental health, and academic outcomes. Existing research suggests that homeschooled children generally demonstrate positive socioemotional functioning, including lower levels of internalizing behaviors such as anxiety and depression and fewer externalizing behaviors such as aggression compared to traditionally schooled peers. These outcomes may be supported by increased parental involvement, stronger family relationships, reduced exposure to bullying, …

Melody Of Wrath: A Retelling Of The Pied Piper, India Raye Sorensen

Theses and Dissertations

Melody of Wrath is a young adult fairy tale retelling of the Pied Piper legend centered on fifteen-year-old antihero Magnus. Driven by grief and rage after the massacre of his people, Magnus wields music as dangerous magic to summon a plague of rats and exact revenge on a corrupt city. The novel follows his morally complex journey from vengeance through compromise to a final test inside a transformative mountain, where he confronts the cost of retribution and the uncertain possibility of redemption. Drawing on folktale scholarship, archetypal theory, and literary antiheroes such as Hamlet and Edmond Dantès, this project uses …